Opporeno5 does not receive messages or display them.

If three-party applications use data traffic and WLAN without notice, try the following methods: 1. If the Do Not Disturb notification is turned on, the notification bar will prompt that the Do Not Disturb notification is turned on. Just cancel the Do Not Disturb notification. 2. Turn off the notification switch set to unimportant/turn off the switch moved to the bottom of the notification. A coloros11and higher version path: "long press the application icon"; Application Information/Application Details Notification Management System Default Channel/System Silent Channel; Set as unimportant notification "b. ColorOS 7.2 version path:" long press the application icon "; Application Information Notification Management closes and moves to the bottom of the notification "3. Long press the tripartite application icon to enter Application Information; Power management ",turn on" Allow applications to start by themselves "and turn on" Allow wake-up in the foreground ". 4. Long press the tripartite application icon to enter "Application Information"; Traffic usage ",cancel" Disable mobile data "and" Disable WLAN "and turn on" Data can be used in the background ". 5. Go to Settings SIM Card and Traffic Management (or Mobile Network): Traffic Management and turn off Traffic Saving. This answer applies to all OPPO models.